package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.JwtClaimsConstant;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.JwtProperties;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.JwtUtil;
import com.sky.vo.UserLoginVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Slf4j
@Service

public class UserServiceImpl implements UserService {
    public static final String WX_LOGIN_URL = "https://api.weixin.qq.com/sns/jscode2session";
    
    @Autowired
    private WeChatProperties wx;
    @Autowired
    private UserMapper userMapper;

    @Autowired
    private JwtProperties jwtProperties;
    @Override
    public UserLoginVO login(UserLoginDTO userLoginDTO) {

        Map<String, String> map = new HashMap<>();
        map.put("appid", wx.getAppid());
        map.put("secret", wx.getSecret());
        map.put("js_code", userLoginDTO.getCode());
        map.put("grant_type", "authorization_code");
        String json = HttpClientUtil.doGet(WX_LOGIN_URL, map);
        JSONObject jsonObject = JSON.parseObject(json);
        String openid = jsonObject.getString("openid");

        if(openid == null){
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }

        User user = userMapper.getByOpenid(openid);
        if(user == null){
            user = User.builder()
                    .openid(openid)
                    .createTime(LocalDateTime.now())
                    .build();
            userMapper.insert(user);
        }
        Map<String, Object> clams = new HashMap<>();
        clams.put(JwtClaimsConstant.USER_ID, user.getId());
        String token = JwtUtil.createJWT(jwtProperties.getUserSecretKey(), jwtProperties.getUserTtl(), clams);

        UserLoginVO userLoginVO = UserLoginVO.builder()
                .id(user.getId())
                .openid(openid)
                .token(token)
                .build();
        return userLoginVO;
    }
}
